字符串处理
题目要求
代码
<?php
function getBack($file){
$names=explode('.',$file);
$back=array();
for ($i=count($names)-1;$i>0;$i--) {
$back[$i - 1] = $names[$i];
}
for ($i=0;$i<count($back);$i++){
echo '.',$back[$i],' ';
}
}
$file='test1.txt.exe';
getBack($file);
echo '<br>';
function trans_num($num){
$nums=str_split($num);
for ($pos=count($nums)-3;$pos>0;$pos-=3){
array_splice($nums,$pos,0,',');
}
foreach ($nums as $n){
echo $n;
}
}
trans_num(1243);
echo '<br>';
function word_large($words){
$word=explode('_',$words);
$all='';
foreach ($word as $w){
$all.=ucwords($w);
}
return $all;
}
echo word_large('hello_world_by');
echo '<br>';结果：
正则表达式
题目要求
代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<style>
.name{
width: 100px;
height: 50px;
display: inline-block;
vertical-align: middle;
}
.input{
width: 400px;
height: 50px;
display: inline-block;
}
</style>
<body>
<?php
$name_err=$password_err=$email_err=$phone_err=$talknum_err=$color_err=$nums_err='';
if (isset($_POST["username"])){
$username=$_POST["username"];
}else{
$username='';
$name_err='请输入用户名';
}
if (!empty($username)){
if (preg_match("/^[a-zA-Z]\w{6,18}$/i",$username)){
$name_err='用户名通过！';
}else{
$name_err='用户名不规范！ 6~18个字符,可使用字母，数字，下划线，需以字母开头';
}
}else{
$name_err='请输入用户名！';
}
if (isset($_POST["password"])){
$password=$_POST["password"];
}else{
$password='';
$password_err='请输入密码';
}
if (!empty($password)){
if (preg_match("/^\S{6,16}$/",$password)){
$password_err='密码通过！';
}else{
$password_err='密码不规范！6~16个字符，区分大小写';
}
}else{
$password_err='请输入密码！';
}
if (isset($_POST["email"])){
$email=$_POST["email"];
}else{
$email='';
$email_err='请输入邮箱';
}
if (!empty($email)){
if (preg_match("/^[a-z0-9]+([._-][a-z0-9]+)*@([0-9a-z]+\.[a-z]{2,14}(\.[a-z]{2})?)$/i",$email)){
$email_err='邮箱通过！';
}else{
$email_err='邮箱不规范！';
}
}else{
$email_err='请输入邮箱！';
}
if (isset($_POST["phonenum"])){
$phonenum=$_POST["phonenum"];
}else{
$phonenum='';
$phone_err='请输入手机号';
}
if (!empty($phonenum)){
if (preg_match("/^((\+86)|(86))?1[3589]\d{9}$/",$phonenum)){
$phone_err='手机号通过！';
}else{
$phone_err='请输入长度为11位的数字！';
}
}else{
$phone_err='请输入手机号！';
}
if (isset($_POST["talknum"])){
$talknum=$_POST["talknum"];
}else{
$talknum='';
$talknum_err='请输入座机号';
}
if (!empty($talknum)){
if (preg_match("/^(0[1-9]{2,3}-)?[0-9]{7,8}$/",$talknum)){
$talknum_err='座机号通过！';
}else{
$talknum_err='请输入正确的数字！';
}
}else{
$talknum_err='请输入座机号！';
}
if (isset($_POST["color"])){
$color=$_POST["color"];
}else{
$color='';
$color_err='请输入16进制颜色值';
}
if (!empty($color)){
if (preg_match("/^#(?:(?:[a-f\d]{3}){1,2})$/i",$color)){
$color_err='16进制颜色正确！';
}else{
$color_err='请输入正确的16进制颜色值！';
}
}else{
$color_err='请输入16进制颜色值！';
}
if (isset($_POST["nums"])){
$nums=$_POST["nums"];
}else{
$nums='';
$nums_err='请输入16位数字(每隔四位空格分隔)';
}
if (!empty($nums)){
if (preg_match("/^\d{4}\s\d{4}\s\d{4}\s\d{4}$/",$nums)){
$nums_err='数字输入正确！';
}else{
$nums_err='请输入正确的数字(每隔四位空格分隔)！';
}
}else{
$nums_err='请输入16位数字(每隔四位空格分隔)！';
}
?>
<form action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
<div class="name">用户名:</div>
<div class="input"><input type="text" name="username"><br><?php echo $name_err;?></div>
<br>
<div class="name">密码:</div>
<div class="input"><input name="password"><br><?php echo $password_err;?></div>
<br>
<div class="name">电子邮箱:</div>
<div class="input"><input name="email"><br><?php echo $email_err;?></div>
<br>
<div class="name">手机号码:</div>
<div class="input"><input name="phonenum"><br><?php echo $phone_err;?></div>
<br>
<div class="name">座机号码:</div>
<div class="input"><input name="talknum"><br><?php echo $talknum_err;?></div>
<br>
<div class="name">16进制颜色值:</div>
<div class="input"><input name="color"><br><?php echo $color_err;?></div>
<br>
<div class="name">16位数字:</div>
<div class="input"><input name="nums"><br><?php echo $nums_err;?></div>
<input type="submit" value="提交">
</form>
</body>
</html>